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Ammonium‐N and Nitrate‐N Effects on the Growth and Mineral Compositions of Triticale, Wheat, and Rye 1
Author(s) -
Gashaw L.,
Mugwira L. M.
Publication year - 1981
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1981.00021962007300010011x
Subject(s) - triticale , secale , agronomy , chemistry , dry matter , nitrogen , nutrient , ammonium nitrate , ammonium , absorption (acoustics) , composition (language) , zoology , biology , linguistics , physics , philosophy , organic chemistry , acoustics
Absorption and utilization of N has been shown to be affected by the N form supplied and cultivar used. The relative absorption and utilization of NH 4 + −N and NO 3 − −N by triticale (X Triticosecale , Wittmack), wheat ( Triticum aestivum L.), and rye ( Secale cereale L.) have not been determined. This study was conducted to determine the growth and mineral composition of triticale 6TA 131, ‘Arthur’ wheat, and ‘Abruzzi’ rye grown in nutrient solutions containing different NH 4 + −N/N0 3 − −N ratios in a growth chamber. The NH 4 + −N/NO 3 − −N ratios were 0/100, 25/75, 50/50, 75/25, and 100/0. Solutions were sampled every 10 days during a 30‐day plant growth period. Triticale and rye more preferentially absorbed N0 3 − −N over NH 4 + −N than wheat which sometimes (50/50) absorbed more NO 3 than NH 4 . All species produced higher dry matter with the combinations of 25/75, 50/50, and 75‐25 NH 4 + −N/NO 3 − −N ratios than with either N source alone. There were increases in the uptake of N, P, and Fe when NH 4 + −N/NO 3 − −N ratio was increased in the mixture whereas NO 3 − −N increased the uptake of Mg, Ca, Mn, and NO 3 − −N. These results suggested that the triticale inherited its absorption efficiency of NO 3 − from rye.